Fig. 4From: Zinc deficiency or excess within the physiological range increases genome instability and cytotoxicity, respectively, in human oral keratinocyte cellsTail moment values for cells treated with a ZnSO4 and b ZnC; Tail intensity values for cells treated with c ZnSO4 and d ZnC at increasing concentrations of Zn. Groups not sharing the same superscript letter are significantly different to each other (P values refer to One-way ANOVA analysis: P < 0.05). Results are shown as mean ± standard error (n = 6)Back to article page